I have a Windows XP with "Delphi 2015.3" (Car Diagnostics software) installed on it and it was working properly on VirtualBox 5.1.xx. Recently I have been experimenting with VirtualBox RC1 and yesterday I wanted to perform some diagnostics on a friend's car, but the USB drivers did not load properly when connecting the "CDP+/Multidiag Pro+" (Vehicle Communication Interface).

It has worked fine after uninstalling VirtualBox-5.2.0_RC1-118265-Win and deleting the Oracle_VM_VirtualBox_Extension_Pack-5.2.0_RC1-118266 folder, then reinstalling VirtualBox-5.1.28-117968-Win with its Oracle_VM_VirtualBox_Extension_Pack-5.1.28-117968.

So, just to make it clear. It works now, doesn't it? A reinstall made it work properly, right? Is that what you're saying?

If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.

Please read the following thread: USB basics and troubleshooting, all of the posts. If you still have a problem after reading through the whole thing, please follow the advice of the last post.

If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.

If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.